66480860 has 24 divisors (see below), whose sum is σ = 143384640. Its totient is φ = 25873344.

The previous prime is 66480859. The next prime is 66480893. The reversal of 66480860 is 6808466.

66480860 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

66480860 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44180 + ... + 45659.

It is an arithmetic number, because the mean of its divisors is an integer number (5974360).

Almost surely, 2^66480860 is an apocalyptic number.

It is an amenable number.

66480860 is an abundant number, since it is smaller than the sum of its proper divisors (76903780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66480860 is a wasteful number, since it uses less digits than its factorization.

66480860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89885 (or 89883 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 66480860 is about 8153.5795819996. The cubic root of 66480860 is about 405.1030779646.

The spelling of 66480860 in words is "sixty-six million, four hundred eighty thousand, eight hundred sixty".